Water-tight butt-joint.



PATENTBD AUG, 1, 1905.

P. c. KELSBY. v WATER TIGHT BUTT JOINT.

APPLICATION FILED SEPT. 30. 1904.-

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WATER-TIGHT BUTT-JOINT.

Specification of Letters Patent.

Patented Aug. 1, 1905.

Application filed September 30, 1904. Serial No. 226,666.

Be it known that I, FRANK CLAY KnLsEY, a citizen of the United States, and a resident of Salt Lake City, in the county of Salt Lake and State of Utah, have invented a new and Improved IVater-Tight Butt-Joint, of which the following is a full, clear, and exact description.

My invention relates to stave pipes, my moreparticular object being to produce a type of butt-joint for connecting the ends of the 'staves together so as to prevent leakage and also to hold the adjacentabutting ends of the staves rigidly in predetermined positions relatively to each other.

yReference is made to my pending application, Serial N o. 17 2,687 filed September 10,

1903, involving a somewhat similar subjectmatter.

Reference is to be had to the accompanying drawings, forminga part of this specification, in which similar characters of reference indicate corresponding parts in all the ligures.

Figure l is a vertical section through a stave-pipe equipped with my improved joint. Fig. 2 is an enlarged vertical section through the same upon the line 2 2 of Fig. l looking in the direction of the arrow, and Fig. 3 is a perspective view of the stave-pipe provided with the joints of my invention.

The individual staves are shown at 4 and may be of the usual shape, being fitted together as indicated in Figs. l and 3. The outer flange 5 5 and the inner flange 6 6*? are made of metal and are integrally connected by a web 8 8 and provided with a wedgeshaped rib 7 7a, either arcuate or. sinusoidal in general conformity, as indicated in Fig. 1. The ends 9 9 of the rib yproject slightly beyond the extreme boundaries of the web and are beveled, as indicated.

The pipe is assembled in the usual manner, and the joint, consisting of the members 55, 6 6, 7 7, 8 8*, 9 and 9a, preferably having the form of a single solid casting, is used for the purpose of rendering water-tight the abutting ends and edges of the staves, as will be understood from the drawings. The staves may be assembled in the usual manner so as to form a pipe, the butt-joint being inserted in position so that when the staves are driven in their places relatively to each other, the opposit-ely-disposed beveled ends 9 9u split into the edges of the staves and the wedgeshaped ribs split slightly into the ends of the staves, thus preventing the passage of water. I find that by this construction a perfectly water-tight joint is formed where the timber ends abut eachother.

The sinusoidal form of the wedge 7 is sometimes preferable to the arcuate form 7 for the j reason that it tends to distribute throughout the thickness of the timber the splitting strain and also tends more effectively to hold the timber in a predetermined position in addition to rendering the same water-tight.

The pipe may of course be belted in the usual manner, this feature having nothing to do with the present invention. While I show the rib 7 7 a as wedge-shaped in cross-section, I do not limit myself to the use of a single rib upon each face of the web.

Having thus described my invention, I claim as new and desire to secure by Letters Patent l. A water-tight butt-jointv comprising a central web provided with portions for engaging the respective inner and outer surfaces of staves, said web being further provided with a rib integral therewith for splitting into the staves abutting said web.

2. A water-tight butt-joint comprising a central web provided with portions for engaging the respective inner and outer surfaces of staves, said web being further provided with a rib substantially web-shaped in crosssection and integral therewith for splitting into the staves abutting said web.

3. A water-tight buttjoint comprising a `central web provided with portions for engaging the surfaces of staves, said web being further provided with a rib having beveled ends projecting beyond the limits of said web for splitting into the edges of staves abutting said web.,

4. A water-tight buttjoint comprising a central web provided with portions for engaging the respective inner and outer surfaces of staves, said web being further provided with a rib integral therewith and having a substantially web-shaped cross-section, said rib being provided with beveled ends for splitting intothe edges of staves abutting said web.

5. A water-tight butt-joint comprising inner and outer flanges connected together by a web, and a rib integral withsaid web and projecting laterally therefrom for the purpose of engaging the ends of staves abutting said web.

6. A water-tight buttjoint comprising a body portion provided with a web and with a rib integral with said web, said rib being of arcuate Jform as distinguished from sinuous 4form and adapted to split into the ends of staves abutting said web.

7. A water-tight buttjoint, comprising a, body portion of metal provided with a wedgeshaped rib integral therewith, said ribv being longer than said web and provided with beveled ends projecting slightly beyond the ends of said web for the purpose of splitting into the edges of staves disposed' adjacent thereto.

In testimony whereof l have signed my name to this specification in the presence of two subscribing witnesses.

FRANK CLAY KELSEY.

Witnesses:

HARRY P. POLL, W. A. SHEPHERD. 

